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<FONT color="green">001</FONT>    package maze.gui.mazeeditor;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.awt.Graphics;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.awt.Graphics2D;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.awt.Point;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.awt.event.MouseAdapter;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.awt.event.MouseEvent;<a name="line.7"></a>
<FONT color="green">008</FONT>    import java.util.TreeSet;<a name="line.8"></a>
<FONT color="green">009</FONT>    import java.util.Vector;<a name="line.9"></a>
<FONT color="green">010</FONT>    <a name="line.10"></a>
<FONT color="green">011</FONT>    import javax.swing.SwingUtilities;<a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>    import maze.gui.MazeView;<a name="line.13"></a>
<FONT color="green">014</FONT>    import maze.model.CellSizeModel;<a name="line.14"></a>
<FONT color="green">015</FONT>    import maze.model.Direction;<a name="line.15"></a>
<FONT color="green">016</FONT>    import maze.model.MazeCell;<a name="line.16"></a>
<FONT color="green">017</FONT>    import maze.model.MazeCellPeg;<a name="line.17"></a>
<FONT color="green">018</FONT>    import maze.model.MazeModel.MazeWall;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    /**<a name="line.20"></a>
<FONT color="green">021</FONT>     * This class provides a MazeView on which maze templates can be applied to the<a name="line.21"></a>
<FONT color="green">022</FONT>     * underlying model. This view is responsible for drawing the current template<a name="line.22"></a>
<FONT color="green">023</FONT>     * that will be applied.<a name="line.23"></a>
<FONT color="green">024</FONT>     * @author Johnathan Smith<a name="line.24"></a>
<FONT color="green">025</FONT>     */<a name="line.25"></a>
<FONT color="green">026</FONT>    public final class EditableMazeView extends MazeView<a name="line.26"></a>
<FONT color="green">027</FONT>    {<a name="line.27"></a>
<FONT color="green">028</FONT>       private static final int WALL_SIZE_DIVIDER = 3;<a name="line.28"></a>
<FONT color="green">029</FONT>       private MazeCell activeCell;<a name="line.29"></a>
<FONT color="green">030</FONT>       private Direction activeWallDir;<a name="line.30"></a>
<FONT color="green">031</FONT>       private MazeTemplate mCurrentTemplate = null;<a name="line.31"></a>
<FONT color="green">032</FONT>    <a name="line.32"></a>
<FONT color="green">033</FONT>       private final transient MouseAdapter mouseAdapter = new MouseAdapter()<a name="line.33"></a>
<FONT color="green">034</FONT>       {<a name="line.34"></a>
<FONT color="green">035</FONT>          @Override<a name="line.35"></a>
<FONT color="green">036</FONT>          public void mouseDragged(MouseEvent e)<a name="line.36"></a>
<FONT color="green">037</FONT>          {<a name="line.37"></a>
<FONT color="green">038</FONT>             if (model != null)<a name="line.38"></a>
<FONT color="green">039</FONT>             {<a name="line.39"></a>
<FONT color="green">040</FONT>                setActiveWall(null, null);<a name="line.40"></a>
<FONT color="green">041</FONT>                final MazeCell cell = getHostMazeCell(e.getPoint());<a name="line.41"></a>
<FONT color="green">042</FONT>                if (cell != null)<a name="line.42"></a>
<FONT color="green">043</FONT>                {<a name="line.43"></a>
<FONT color="green">044</FONT>                   final MazeWall wall = getWall(e.getPoint());<a name="line.44"></a>
<FONT color="green">045</FONT>                   if (wall != null)<a name="line.45"></a>
<FONT color="green">046</FONT>                   {<a name="line.46"></a>
<FONT color="green">047</FONT>                      if (SwingUtilities.isLeftMouseButton(e))<a name="line.47"></a>
<FONT color="green">048</FONT>                      {<a name="line.48"></a>
<FONT color="green">049</FONT>                         if (wall.isSet() == false)<a name="line.49"></a>
<FONT color="green">050</FONT>                         {<a name="line.50"></a>
<FONT color="green">051</FONT>                            wall.set(true);<a name="line.51"></a>
<FONT color="green">052</FONT>                            invalidateCell(cell);<a name="line.52"></a>
<FONT color="green">053</FONT>                         }<a name="line.53"></a>
<FONT color="green">054</FONT>                      }<a name="line.54"></a>
<FONT color="green">055</FONT>                      else if (SwingUtilities.isRightMouseButton(e))<a name="line.55"></a>
<FONT color="green">056</FONT>                      {<a name="line.56"></a>
<FONT color="green">057</FONT>                         if (wall.isSet())<a name="line.57"></a>
<FONT color="green">058</FONT>                         {<a name="line.58"></a>
<FONT color="green">059</FONT>                            wall.set(false);<a name="line.59"></a>
<FONT color="green">060</FONT>                            invalidateCell(cell);<a name="line.60"></a>
<FONT color="green">061</FONT>                         }<a name="line.61"></a>
<FONT color="green">062</FONT>                      }<a name="line.62"></a>
<FONT color="green">063</FONT>                   }<a name="line.63"></a>
<FONT color="green">064</FONT>                }<a name="line.64"></a>
<FONT color="green">065</FONT>             }<a name="line.65"></a>
<FONT color="green">066</FONT>          }<a name="line.66"></a>
<FONT color="green">067</FONT>    <a name="line.67"></a>
<FONT color="green">068</FONT>          @Override<a name="line.68"></a>
<FONT color="green">069</FONT>          public void mouseMoved(MouseEvent e)<a name="line.69"></a>
<FONT color="green">070</FONT>          {<a name="line.70"></a>
<FONT color="green">071</FONT>             if (model != null)<a name="line.71"></a>
<FONT color="green">072</FONT>             {<a name="line.72"></a>
<FONT color="green">073</FONT>                MazeCell newActive = getHostMazeCell(e.getPoint());<a name="line.73"></a>
<FONT color="green">074</FONT>                if (newActive != null)<a name="line.74"></a>
<FONT color="green">075</FONT>                {<a name="line.75"></a>
<FONT color="green">076</FONT>                   if (getWallArea(newActive, Direction.East).contains(e.getPoint()) &amp;&amp;<a name="line.76"></a>
<FONT color="green">077</FONT>                       newActive.getX() &lt; model.getSize().width)<a name="line.77"></a>
<FONT color="green">078</FONT>                   {<a name="line.78"></a>
<FONT color="green">079</FONT>                      setActiveWall(newActive, Direction.East);<a name="line.79"></a>
<FONT color="green">080</FONT>                   }<a name="line.80"></a>
<FONT color="green">081</FONT>                   else if (getWallArea(newActive, Direction.South).contains(e.getPoint()) &amp;&amp;<a name="line.81"></a>
<FONT color="green">082</FONT>                            newActive.getY() &lt; model.getSize().height)<a name="line.82"></a>
<FONT color="green">083</FONT>                   {<a name="line.83"></a>
<FONT color="green">084</FONT>                      setActiveWall(newActive, Direction.South);<a name="line.84"></a>
<FONT color="green">085</FONT>                   }<a name="line.85"></a>
<FONT color="green">086</FONT>                   else<a name="line.86"></a>
<FONT color="green">087</FONT>                   {<a name="line.87"></a>
<FONT color="green">088</FONT>                      setActiveWall(null, null);<a name="line.88"></a>
<FONT color="green">089</FONT>                   }<a name="line.89"></a>
<FONT color="green">090</FONT>                }<a name="line.90"></a>
<FONT color="green">091</FONT>                else<a name="line.91"></a>
<FONT color="green">092</FONT>                {<a name="line.92"></a>
<FONT color="green">093</FONT>                   setActiveWall(null, null);<a name="line.93"></a>
<FONT color="green">094</FONT>                }<a name="line.94"></a>
<FONT color="green">095</FONT>             }<a name="line.95"></a>
<FONT color="green">096</FONT>          }<a name="line.96"></a>
<FONT color="green">097</FONT>    <a name="line.97"></a>
<FONT color="green">098</FONT>          @Override<a name="line.98"></a>
<FONT color="green">099</FONT>          public void mousePressed(MouseEvent e)<a name="line.99"></a>
<FONT color="green">100</FONT>          {<a name="line.100"></a>
<FONT color="green">101</FONT>             if (model != null)<a name="line.101"></a>
<FONT color="green">102</FONT>             {<a name="line.102"></a>
<FONT color="green">103</FONT>                final MazeWall wall = getWall(e.getPoint());<a name="line.103"></a>
<FONT color="green">104</FONT>                if (wall != null)<a name="line.104"></a>
<FONT color="green">105</FONT>                {<a name="line.105"></a>
<FONT color="green">106</FONT>                   //Flip the status of the wall.<a name="line.106"></a>
<FONT color="green">107</FONT>                   wall.set(!wall.isSet());<a name="line.107"></a>
<FONT color="green">108</FONT>                }<a name="line.108"></a>
<FONT color="green">109</FONT>             }<a name="line.109"></a>
<FONT color="green">110</FONT>          }<a name="line.110"></a>
<FONT color="green">111</FONT>       };<a name="line.111"></a>
<FONT color="green">112</FONT>    <a name="line.112"></a>
<FONT color="green">113</FONT>       /**<a name="line.113"></a>
<FONT color="green">114</FONT>        * Constructor.<a name="line.114"></a>
<FONT color="green">115</FONT>        */<a name="line.115"></a>
<FONT color="green">116</FONT>       public EditableMazeView()<a name="line.116"></a>
<FONT color="green">117</FONT>       {<a name="line.117"></a>
<FONT color="green">118</FONT>          super.wallSizeDivider = WALL_SIZE_DIVIDER;<a name="line.118"></a>
<FONT color="green">119</FONT>          this.setEditable(true);<a name="line.119"></a>
<FONT color="green">120</FONT>       }<a name="line.120"></a>
<FONT color="green">121</FONT>    <a name="line.121"></a>
<FONT color="green">122</FONT>       /**<a name="line.122"></a>
<FONT color="green">123</FONT>        * Recursively fetches all walls from the model that will be affected by the<a name="line.123"></a>
<FONT color="green">124</FONT>        * template application. Each peg is only visited once so that this method<a name="line.124"></a>
<FONT color="green">125</FONT>        * will not recurse infinitely.<a name="line.125"></a>
<FONT color="green">126</FONT>        * @param peg the peg from which to start.<a name="line.126"></a>
<FONT color="green">127</FONT>        * @param visited a set of all pegs that have already be visited<a name="line.127"></a>
<FONT color="green">128</FONT>        * @param walls a Vector holding all walls that have already been found to be<a name="line.128"></a>
<FONT color="green">129</FONT>        *           affected by the template. New walls will be added when found.<a name="line.129"></a>
<FONT color="green">130</FONT>        * @param coords the maze coordinates for peg which may be outside of the<a name="line.130"></a>
<FONT color="green">131</FONT>        *           actual maze.<a name="line.131"></a>
<FONT color="green">132</FONT>        */<a name="line.132"></a>
<FONT color="green">133</FONT>       private void applyPeg(TemplatePeg peg, TreeSet&lt;TemplatePeg&gt; visited, Vector&lt;MazeWall&gt; walls,<a name="line.133"></a>
<FONT color="green">134</FONT>             int[] coords)<a name="line.134"></a>
<FONT color="green">135</FONT>       {<a name="line.135"></a>
<FONT color="green">136</FONT>          if (visited.contains(peg))<a name="line.136"></a>
<FONT color="green">137</FONT>             return;<a name="line.137"></a>
<FONT color="green">138</FONT>    <a name="line.138"></a>
<FONT color="green">139</FONT>          visited.add(peg);<a name="line.139"></a>
<FONT color="green">140</FONT>    <a name="line.140"></a>
<FONT color="green">141</FONT>          if (peg.top != null)<a name="line.141"></a>
<FONT color="green">142</FONT>          {<a name="line.142"></a>
<FONT color="green">143</FONT>             if (coords[0] &gt;= 0 &amp;&amp;<a name="line.143"></a>
<FONT color="green">144</FONT>                 coords[0] &lt; model.getSize().width &amp;&amp;<a name="line.144"></a>
<FONT color="green">145</FONT>                 coords[1] &gt;= 0 &amp;&amp;<a name="line.145"></a>
<FONT color="green">146</FONT>                 coords[1] &lt; model.getSize().height)<a name="line.146"></a>
<FONT color="green">147</FONT>                walls.add(model.getWall(new MazeCell(coords[0] + 1, coords[1] + 1), Direction.East));<a name="line.147"></a>
<FONT color="green">148</FONT>    <a name="line.148"></a>
<FONT color="green">149</FONT>             int[] newCoords =<a name="line.149"></a>
<FONT color="green">150</FONT>             {<a name="line.150"></a>
<FONT color="green">151</FONT>                coords[0], coords[1] - 1<a name="line.151"></a>
<FONT color="green">152</FONT>             };<a name="line.152"></a>
<FONT color="green">153</FONT>             applyPeg(peg.top.mRightTop, visited, walls, newCoords);<a name="line.153"></a>
<FONT color="green">154</FONT>          }<a name="line.154"></a>
<FONT color="green">155</FONT>          if (peg.left != null)<a name="line.155"></a>
<FONT color="green">156</FONT>          {<a name="line.156"></a>
<FONT color="green">157</FONT>    <a name="line.157"></a>
<FONT color="green">158</FONT>             if (coords[0] &gt;= 0 &amp;&amp;<a name="line.158"></a>
<FONT color="green">159</FONT>                 coords[0] &lt; model.getSize().width &amp;&amp;<a name="line.159"></a>
<FONT color="green">160</FONT>                 coords[1] &gt;= 0 &amp;&amp;<a name="line.160"></a>
<FONT color="green">161</FONT>                 coords[1] &lt; model.getSize().height)<a name="line.161"></a>
<FONT color="green">162</FONT>                walls.add(model.getWall(new MazeCell(coords[0] + 1, coords[1] + 1), Direction.South));<a name="line.162"></a>
<FONT color="green">163</FONT>    <a name="line.163"></a>
<FONT color="green">164</FONT>             int[] newCoords =<a name="line.164"></a>
<FONT color="green">165</FONT>             {<a name="line.165"></a>
<FONT color="green">166</FONT>                coords[0] - 1, coords[1]<a name="line.166"></a>
<FONT color="green">167</FONT>             };<a name="line.167"></a>
<FONT color="green">168</FONT>             applyPeg(peg.left.mLeftBottom, visited, walls, newCoords);<a name="line.168"></a>
<FONT color="green">169</FONT>          }<a name="line.169"></a>
<FONT color="green">170</FONT>          if (peg.right != null)<a name="line.170"></a>
<FONT color="green">171</FONT>          {<a name="line.171"></a>
<FONT color="green">172</FONT>             int[] newCoords =<a name="line.172"></a>
<FONT color="green">173</FONT>             {<a name="line.173"></a>
<FONT color="green">174</FONT>                coords[0] + 1, coords[1]<a name="line.174"></a>
<FONT color="green">175</FONT>             };<a name="line.175"></a>
<FONT color="green">176</FONT>             applyPeg(peg.right.mRightTop, visited, walls, newCoords);<a name="line.176"></a>
<FONT color="green">177</FONT>          }<a name="line.177"></a>
<FONT color="green">178</FONT>          if (peg.bottom != null)<a name="line.178"></a>
<FONT color="green">179</FONT>          {<a name="line.179"></a>
<FONT color="green">180</FONT>             int[] newCoords =<a name="line.180"></a>
<FONT color="green">181</FONT>             {<a name="line.181"></a>
<FONT color="green">182</FONT>                coords[0], coords[1] + 1<a name="line.182"></a>
<FONT color="green">183</FONT>             };<a name="line.183"></a>
<FONT color="green">184</FONT>             applyPeg(peg.bottom.mLeftBottom, visited, walls, newCoords);<a name="line.184"></a>
<FONT color="green">185</FONT>          }<a name="line.185"></a>
<FONT color="green">186</FONT>       }<a name="line.186"></a>
<FONT color="green">187</FONT>    <a name="line.187"></a>
<FONT color="green">188</FONT>       /**<a name="line.188"></a>
<FONT color="green">189</FONT>        * Applied the currently selected template either setting walls or clearing<a name="line.189"></a>
<FONT color="green">190</FONT>        * walls based on the value of setWall. If setWall is true, the walls under<a name="line.190"></a>
<FONT color="green">191</FONT>        * the template will be set, otherwise they will be cleared.<a name="line.191"></a>
<FONT color="green">192</FONT>        * @param setWall true if the walls under the template should be set, false<a name="line.192"></a>
<FONT color="green">193</FONT>        *           if the walls under the template should be cleared<a name="line.193"></a>
<FONT color="green">194</FONT>        */<a name="line.194"></a>
<FONT color="green">195</FONT>       public void applyTemplate(boolean setWall)<a name="line.195"></a>
<FONT color="green">196</FONT>       {<a name="line.196"></a>
<FONT color="green">197</FONT>          if (model == null || mCurrentTemplate == null)<a name="line.197"></a>
<FONT color="green">198</FONT>             return;<a name="line.198"></a>
<FONT color="green">199</FONT>          TemplatePeg[] tp = mCurrentTemplate.getCenterPegs();<a name="line.199"></a>
<FONT color="green">200</FONT>          Point[] cp = mCurrentTemplate.getCenterPoints(this.getCellSizeModel());<a name="line.200"></a>
<FONT color="green">201</FONT>          Vector&lt;MazeWall&gt; walls = new Vector&lt;MazeWall&gt;();<a name="line.201"></a>
<FONT color="green">202</FONT>          TreeSet&lt;TemplatePeg&gt; applied = new TreeSet&lt;TemplatePeg&gt;();<a name="line.202"></a>
<FONT color="green">203</FONT>          for (int i = 0; i &lt; Math.min(tp.length, cp.length); i++)<a name="line.203"></a>
<FONT color="green">204</FONT>          {<a name="line.204"></a>
<FONT color="green">205</FONT>             if (applied.contains(tp[i]))<a name="line.205"></a>
<FONT color="green">206</FONT>                continue;<a name="line.206"></a>
<FONT color="green">207</FONT>    <a name="line.207"></a>
<FONT color="green">208</FONT>             MazeCell hostCell = this.getHostMazeCell(cp[i]);<a name="line.208"></a>
<FONT color="green">209</FONT>             if (hostCell != null)<a name="line.209"></a>
<FONT color="green">210</FONT>             {<a name="line.210"></a>
<FONT color="green">211</FONT>                int[] coords =<a name="line.211"></a>
<FONT color="green">212</FONT>                {<a name="line.212"></a>
<FONT color="green">213</FONT>                   hostCell.getXZeroBased(), hostCell.getYZeroBased()<a name="line.213"></a>
<FONT color="green">214</FONT>                };<a name="line.214"></a>
<FONT color="green">215</FONT>    <a name="line.215"></a>
<FONT color="green">216</FONT>                int leftX = coords[0] * csm.getCellWidth();<a name="line.216"></a>
<FONT color="green">217</FONT>                int leftY = coords[1] * csm.getCellHeight();<a name="line.217"></a>
<FONT color="green">218</FONT>    <a name="line.218"></a>
<FONT color="green">219</FONT>                if (cp[i].x &gt; leftX + csm.getCellWidthHalf() / 2 &amp;&amp;<a name="line.219"></a>
<FONT color="green">220</FONT>                    cp[i].x &lt;= leftX + csm.getCellWidthHalf())<a name="line.220"></a>
<FONT color="green">221</FONT>                   continue;<a name="line.221"></a>
<FONT color="green">222</FONT>                if (cp[i].y &gt; leftY + csm.getCellHeightHalf() / 2 &amp;&amp;<a name="line.222"></a>
<FONT color="green">223</FONT>                    cp[i].y &lt;= leftY + csm.getCellHeightHalf())<a name="line.223"></a>
<FONT color="green">224</FONT>                   continue;<a name="line.224"></a>
<FONT color="green">225</FONT>    <a name="line.225"></a>
<FONT color="green">226</FONT>                int halfX = leftX + csm.getCellWidthHalf();<a name="line.226"></a>
<FONT color="green">227</FONT>                if (cp[i].x &lt; halfX)<a name="line.227"></a>
<FONT color="green">228</FONT>                   coords[0]--;<a name="line.228"></a>
<FONT color="green">229</FONT>    <a name="line.229"></a>
<FONT color="green">230</FONT>                int halfY = leftY + csm.getCellHeightHalf();<a name="line.230"></a>
<FONT color="green">231</FONT>                if (cp[i].y &lt; halfY)<a name="line.231"></a>
<FONT color="green">232</FONT>                   coords[1]--;<a name="line.232"></a>
<FONT color="green">233</FONT>    <a name="line.233"></a>
<FONT color="green">234</FONT>                TreeSet&lt;TemplatePeg&gt; visited = new TreeSet&lt;TemplatePeg&gt;();<a name="line.234"></a>
<FONT color="green">235</FONT>    <a name="line.235"></a>
<FONT color="green">236</FONT>                applyPeg(tp[i], visited, walls, coords);<a name="line.236"></a>
<FONT color="green">237</FONT>                applied.addAll(visited);<a name="line.237"></a>
<FONT color="green">238</FONT>             }<a name="line.238"></a>
<FONT color="green">239</FONT>          }<a name="line.239"></a>
<FONT color="green">240</FONT>          for (MazeWall ms : walls)<a name="line.240"></a>
<FONT color="green">241</FONT>             ms.set(setWall);<a name="line.241"></a>
<FONT color="green">242</FONT>       }<a name="line.242"></a>
<FONT color="green">243</FONT>    <a name="line.243"></a>
<FONT color="green">244</FONT>       /**<a name="line.244"></a>
<FONT color="green">245</FONT>        * Get the cell size model.<a name="line.245"></a>
<FONT color="green">246</FONT>        * @return A copy of the model instance.<a name="line.246"></a>
<FONT color="green">247</FONT>        */<a name="line.247"></a>
<FONT color="green">248</FONT>       public CellSizeModel getCellSizeModel()<a name="line.248"></a>
<FONT color="green">249</FONT>       {<a name="line.249"></a>
<FONT color="green">250</FONT>          return this.csm.clone();<a name="line.250"></a>
<FONT color="green">251</FONT>       }<a name="line.251"></a>
<FONT color="green">252</FONT>    <a name="line.252"></a>
<FONT color="green">253</FONT>       /**<a name="line.253"></a>
<FONT color="green">254</FONT>        * Get the cell that the given point is located in. This gives us a means to<a name="line.254"></a>
<FONT color="green">255</FONT>        * translate between coordinate positions and cells.<a name="line.255"></a>
<FONT color="green">256</FONT>        * @param pointerLocation A coordinate point in the maze area.<a name="line.256"></a>
<FONT color="green">257</FONT>        * @return The cell or null if the point is not inside a valid cell.<a name="line.257"></a>
<FONT color="green">258</FONT>        */<a name="line.258"></a>
<FONT color="green">259</FONT>       protected MazeCell getHostMazeCell(Point pointerLocation)<a name="line.259"></a>
<FONT color="green">260</FONT>       {<a name="line.260"></a>
<FONT color="green">261</FONT>          try<a name="line.261"></a>
<FONT color="green">262</FONT>          {<a name="line.262"></a>
<FONT color="green">263</FONT>             // If the pointer is on the North or West border wall.<a name="line.263"></a>
<FONT color="green">264</FONT>             if (pointerLocation.x &lt; csm.getWallWidth() || pointerLocation.y &lt; csm.getWallHeight())<a name="line.264"></a>
<FONT color="green">265</FONT>                return null;<a name="line.265"></a>
<FONT color="green">266</FONT>             MazeCell cell = new MazeCell( ( (pointerLocation.x - csm.getWallWidth()) / csm.getCellWidth()) + 1,<a name="line.266"></a>
<FONT color="green">267</FONT>                                          ( (pointerLocation.y - csm.getWallHeight()) / csm.getCellHeight()) + 1);<a name="line.267"></a>
<FONT color="green">268</FONT>             if (cell.isInRange(this.model.getSize()))<a name="line.268"></a>
<FONT color="green">269</FONT>                return cell;<a name="line.269"></a>
<FONT color="green">270</FONT>          }<a name="line.270"></a>
<FONT color="green">271</FONT>          catch (IllegalArgumentException e)<a name="line.271"></a>
<FONT color="green">272</FONT>          {}<a name="line.272"></a>
<FONT color="green">273</FONT>          return null;<a name="line.273"></a>
<FONT color="green">274</FONT>       }<a name="line.274"></a>
<FONT color="green">275</FONT>    <a name="line.275"></a>
<FONT color="green">276</FONT>       /**<a name="line.276"></a>
<FONT color="green">277</FONT>        * Converts a mouse pointer location into an actual maze wall object.<a name="line.277"></a>
<FONT color="green">278</FONT>        * @param pointerLocation Cursor location or other point.<a name="line.278"></a>
<FONT color="green">279</FONT>        * @return The maze wall that can be checked or changed, or null if the<a name="line.279"></a>
<FONT color="green">280</FONT>        *         pointer is not over a wall.<a name="line.280"></a>
<FONT color="green">281</FONT>        */<a name="line.281"></a>
<FONT color="green">282</FONT>       protected MazeWall getWall(Point pointerLocation)<a name="line.282"></a>
<FONT color="green">283</FONT>       {<a name="line.283"></a>
<FONT color="green">284</FONT>          final MazeCell cell = this.getHostMazeCell(pointerLocation);<a name="line.284"></a>
<FONT color="green">285</FONT>          if (cell != null)<a name="line.285"></a>
<FONT color="green">286</FONT>          {<a name="line.286"></a>
<FONT color="green">287</FONT>             if (super.getWallArea(cell, Direction.East).contains(pointerLocation))<a name="line.287"></a>
<FONT color="green">288</FONT>                return super.model.getWall(cell, Direction.East);<a name="line.288"></a>
<FONT color="green">289</FONT>             if (super.getWallArea(cell, Direction.South).contains(pointerLocation))<a name="line.289"></a>
<FONT color="green">290</FONT>                return super.model.getWall(cell, Direction.South);<a name="line.290"></a>
<FONT color="green">291</FONT>          }<a name="line.291"></a>
<FONT color="green">292</FONT>          return null;<a name="line.292"></a>
<FONT color="green">293</FONT>       }<a name="line.293"></a>
<FONT color="green">294</FONT>    <a name="line.294"></a>
<FONT color="green">295</FONT>       /**<a name="line.295"></a>
<FONT color="green">296</FONT>        * Paints the currently selected maze template if one is selected. Also<a name="line.296"></a>
<FONT color="green">297</FONT>        * paints valid and invalid pegs.<a name="line.297"></a>
<FONT color="green">298</FONT>        * @param arg the Graphics object that will be used for drawing operations.<a name="line.298"></a>
<FONT color="green">299</FONT>        */<a name="line.299"></a>
<FONT color="green">300</FONT>       @Override<a name="line.300"></a>
<FONT color="green">301</FONT>       protected void paintComponent(Graphics arg)<a name="line.301"></a>
<FONT color="green">302</FONT>       {<a name="line.302"></a>
<FONT color="green">303</FONT>          super.paintComponent(arg);<a name="line.303"></a>
<FONT color="green">304</FONT>          final Graphics2D g2 = (Graphics2D) arg;<a name="line.304"></a>
<FONT color="green">305</FONT>          if (model != null)<a name="line.305"></a>
<FONT color="green">306</FONT>          {<a name="line.306"></a>
<FONT color="green">307</FONT>             //TODO: Pegs can be drawn in the base maze view class with better performance.<a name="line.307"></a>
<FONT color="green">308</FONT>             for (MazeCellPeg p : model.illegalPegs())<a name="line.308"></a>
<FONT color="green">309</FONT>             {<a name="line.309"></a>
<FONT color="green">310</FONT>                super.painter.drawPegInvalid(g2, super.getPegArea(p.getMazeCell()));<a name="line.310"></a>
<FONT color="green">311</FONT>             }<a name="line.311"></a>
<FONT color="green">312</FONT>             if (model.isCenterLegal())<a name="line.312"></a>
<FONT color="green">313</FONT>                super.painter.drawPegValid(g2, super.getPegArea(model.getWinningCells()[0]));<a name="line.313"></a>
<FONT color="green">314</FONT>    <a name="line.314"></a>
<FONT color="green">315</FONT>             if (mCurrentTemplate != null)<a name="line.315"></a>
<FONT color="green">316</FONT>                mCurrentTemplate.draw(g2, this.getCellSizeModel(), this.painter);<a name="line.316"></a>
<FONT color="green">317</FONT>          }<a name="line.317"></a>
<FONT color="green">318</FONT>          if (this.activeCell != null &amp;&amp; this.activeWallDir != null)<a name="line.318"></a>
<FONT color="green">319</FONT>          {<a name="line.319"></a>
<FONT color="green">320</FONT>             super.painter.drawCellHover(g2, super.getWallArea(this.activeCell, this.activeWallDir));<a name="line.320"></a>
<FONT color="green">321</FONT>          }<a name="line.321"></a>
<FONT color="green">322</FONT>       }<a name="line.322"></a>
<FONT color="green">323</FONT>    <a name="line.323"></a>
<FONT color="green">324</FONT>       /**<a name="line.324"></a>
<FONT color="green">325</FONT>        * The wall that the mouse is hovering over should be set active so it can be<a name="line.325"></a>
<FONT color="green">326</FONT>        * highlighted.<a name="line.326"></a>
<FONT color="green">327</FONT>        * @param newCell Cell containing the active wall.<a name="line.327"></a>
<FONT color="green">328</FONT>        * @param newDir Which wall is active.<a name="line.328"></a>
<FONT color="green">329</FONT>        */<a name="line.329"></a>
<FONT color="green">330</FONT>       private void setActiveWall(MazeCell newCell, Direction newDir)<a name="line.330"></a>
<FONT color="green">331</FONT>       {<a name="line.331"></a>
<FONT color="green">332</FONT>          boolean repaint = false;<a name="line.332"></a>
<FONT color="green">333</FONT>          if ( (newCell == null &amp;&amp; activeCell != null) ||<a name="line.333"></a>
<FONT color="green">334</FONT>              (newCell != null &amp;&amp; newCell.equals(activeCell) == false))<a name="line.334"></a>
<FONT color="green">335</FONT>          {<a name="line.335"></a>
<FONT color="green">336</FONT>             activeCell = newCell;<a name="line.336"></a>
<FONT color="green">337</FONT>             repaint = true;<a name="line.337"></a>
<FONT color="green">338</FONT>          }<a name="line.338"></a>
<FONT color="green">339</FONT>          if (this.activeWallDir != newDir)<a name="line.339"></a>
<FONT color="green">340</FONT>          {<a name="line.340"></a>
<FONT color="green">341</FONT>             this.activeWallDir = newDir;<a name="line.341"></a>
<FONT color="green">342</FONT>             repaint = true;<a name="line.342"></a>
<FONT color="green">343</FONT>          }<a name="line.343"></a>
<FONT color="green">344</FONT>          if (repaint)<a name="line.344"></a>
<FONT color="green">345</FONT>             this.repaint();<a name="line.345"></a>
<FONT color="green">346</FONT>       }<a name="line.346"></a>
<FONT color="green">347</FONT>    <a name="line.347"></a>
<FONT color="green">348</FONT>       /**<a name="line.348"></a>
<FONT color="green">349</FONT>        * Sets whether this MazeView allows mouse interactions to modify its<a name="line.349"></a>
<FONT color="green">350</FONT>        * underlying MazeModel.<a name="line.350"></a>
<FONT color="green">351</FONT>        * @param editable true to allow editing.<a name="line.351"></a>
<FONT color="green">352</FONT>        */<a name="line.352"></a>
<FONT color="green">353</FONT>       public void setEditable(boolean editable)<a name="line.353"></a>
<FONT color="green">354</FONT>       {<a name="line.354"></a>
<FONT color="green">355</FONT>          if (editable)<a name="line.355"></a>
<FONT color="green">356</FONT>          {<a name="line.356"></a>
<FONT color="green">357</FONT>             this.addMouseListener(this.mouseAdapter);<a name="line.357"></a>
<FONT color="green">358</FONT>             this.addMouseMotionListener(this.mouseAdapter);<a name="line.358"></a>
<FONT color="green">359</FONT>          }<a name="line.359"></a>
<FONT color="green">360</FONT>          else<a name="line.360"></a>
<FONT color="green">361</FONT>          {<a name="line.361"></a>
<FONT color="green">362</FONT>             this.removeMouseListener(this.mouseAdapter);<a name="line.362"></a>
<FONT color="green">363</FONT>             this.removeMouseMotionListener(this.mouseAdapter);<a name="line.363"></a>
<FONT color="green">364</FONT>             this.activeCell = null;<a name="line.364"></a>
<FONT color="green">365</FONT>          }<a name="line.365"></a>
<FONT color="green">366</FONT>       }<a name="line.366"></a>
<FONT color="green">367</FONT>    <a name="line.367"></a>
<FONT color="green">368</FONT>       /**<a name="line.368"></a>
<FONT color="green">369</FONT>        * Sets the currently selected template to mt<a name="line.369"></a>
<FONT color="green">370</FONT>        * @param mt the new current template that will be used. May be null.<a name="line.370"></a>
<FONT color="green">371</FONT>        */<a name="line.371"></a>
<FONT color="green">372</FONT>       public void setTemplate(MazeTemplate mt)<a name="line.372"></a>
<FONT color="green">373</FONT>       {<a name="line.373"></a>
<FONT color="green">374</FONT>          mCurrentTemplate = mt;<a name="line.374"></a>
<FONT color="green">375</FONT>       }<a name="line.375"></a>
<FONT color="green">376</FONT>    <a name="line.376"></a>
<FONT color="green">377</FONT>    }<a name="line.377"></a>




























































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